Fishing – trapping – and vermin destroying
Patent
1992-04-16
1993-05-25
Hearn, Brian E.
Fishing, trapping, and vermin destroying
437128, 437247, H01L 21203
Patent
active
052139956
ABSTRACT:
A novel method of making articles that comprise a periodic heteroepitaxial semiconductor structure is disclosed. The method pertains to growth of the periodic structure by MBE, CVD or similar growth techniques, and involves periodically changing the substrate temperature. For instance, a periodic multilayer GaAs/AlGaAs is grown by MBE, with the substrate temperature cycled between 600.degree. C. and 700.degree. C. The novel method can produce multilayer structures of uniformly high material quality.
REFERENCES:
patent: 4900372 (1990-02-01), Lee et al.
patent: 5079616 (1992-01-01), Yacobi et al.
"A Simple Way to Reduce Series Resistance in P-Doped Semiconductor Distributed Bragg Reflectors", by Hong et al., Journal of Crystal Growth, vol. 111 (1991), pp. 1071-1075.
"MBE Growth and Characteristics of Periodic Index Separate Confinement Heterostructure InGaAs Quantum-Well Lasers", by M. Hong et al., Journal of Electronic Materials, vol. 21, No. 2, 1992, pp. 181-185.
Chen Young-Kai
Hong Minghwei
Mannaerts Joseph P.
Wu Ming-Chiang
AT&T Bell Laboratories
Chaudhari C.
Hearn Brian E.
Pacher E. E.
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